1966193 has 4 divisors (see below), whose sum is σ = 1969008. Its totient is φ = 1963380.

The previous prime is 1966189. The next prime is 1966207. The reversal of 1966193 is 3916691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1966193 - 2² = 1966189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1966123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530 + ... + 2052.

It is an arithmetic number, because the mean of its divisors is an integer number (492252).

2^1966193 is an apocalyptic number.

It is an amenable number.

1966193 is a deficient number, since it is larger than the sum of its proper divisors (2815).

1966193 is a wasteful number, since it uses less digits than its factorization.

1966193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814.

The product of its digits is 8748, while the sum is 35.

The square root of 1966193 is about 1402.2100413276. The cubic root of 1966193 is about 125.2781645368.

The spelling of 1966193 in words is "one million, nine hundred sixty-six thousand, one hundred ninety-three".